Electric fan



FIG. 1 is an upper perspective view of an electric fan according to our new design;

FIG. 2 is a front elevational view of the electric fan of FIG. 1;

FIG. 3 is a left side elevational view of the electric fan of FIG. 1;

FIG. 4 is a rear elevational view of the electric fan of FIG. 1;

FIG. 5 is a right side elevational view of the electric fan of FIG. 1;

FIG. 6 is a top view of the electric fan of FIG. 1; and,

FIG. 7 is a bottom view of the electric fan of FIG. 1.

The broken lines in the drawings depict parts of the electric fan that form no part of the claimed design. 

CLAIM The ornamental design for an electric fan, as shown and described. 